Platform bed



FIG. 1 is a front oblique perspective view of a platform bed showing my new design.

FIG. 2 is a front elevation view showing my new design.

FIG. 3 is a left side elevation view thereof; the right side elevation view (not shown) being a mirror image thereof.

FIG. 4 is a back elevation view thereof; and,

FIG. 5 is a top plan view thereof. 

CLAIM The ornamental design for the platform bed, as shown and described. 